Mutsuro Ohta
29Patents
8h-index
51Co-inventors
78Inventor score
Filing activity: Sep 15, 1995 → Sep 30, 2016
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7570455B2 | Data storage device and magnetic disk drive in hermetically sealed condition | Physics | 59 | Expired |
| US6507461B1 | Inertial latch for an actuator in a disk drive device | Physics | 21 | Expired |
| US5796555A | Transducer suspension system having bosses with different inner diameters, and equal outer diameters | Physics | 17 | Expired |
| US6636380B2 | Hard disk drive | Physics | 12 | Expired |
| US6137658A | Apparatus for guiding and locking a rotary actuator | Physics | 11 | Expired |
| US9672870B1 | Sealed bulkhead electrical feed-through X-Y positioning control | Electricity | 10 | Active |
| US6532137B2 | Head assembly, disk drive apparatus, hard disk drive and method for manufacturing disk drive apparatus | Physics | 9 | Expired |
| US6034843A | Actuator arm assembly and wiring aparatus used in a disk storage system for wiring voice coil wires to a flex cable | Physics | 9 | Expired |
| US5896245A | Structure in a disk drive system for attaching a load beam to a head actuator carriage including a mountplate having side ends surrounding a swage hole | Physics | 8 | Expired |
| US7609483B2 | Data storage device with load/unload tab inclined towards a disk | Physics | 8 | Active |
| US5628571A | Bearing structure | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6639758B2 | Disk drive apparatus including a load/unload ramp with different angles for standard and depopulated versions | Physics | 7 | Expired |
| US7450347B2 | Head suspension with bridge portion separating apertures near lift tab | Physics | 7 | Expired |
| US7030527B2 | Data storage device with mechanism to control rotation of spindle motor | Electricity | 7 | Expired |
| US7564645B2 | Rotating disk storage device with mounting structure and enhanced fixing mechanism | Physics | 6 | Expired |
| US6952323B2 | System and method of constraining vibration in a disk drive unit and motor device | Physics | 6 | Expired |
| US8305714B2 | Voice-coil motor with voice coils configured oriented in the same direction and substantially overlayed to reduce head vibrations in a disk drive | Physics | 5 | Active |
| US6900956B2 | Disk device and data-erasing method | Electricity | 4 | Expired |
| US6633452B2 | Disk drive apparatus, hard disk drive, and enclosure for hard disk drive | Physics | 3 | Expired |
| US9747956B1 | Base for protecting external welds of hermetically sealed electronic devices | Physics | 3 | Active |
| US7203034B2 | Using eddy-currents for releasing actuator suspension assembly of rotary disk storage device | Physics | 1 | Expired |
| US8289657B2 | Actuator mechanism for magnetic disk drive | Physics | 1 | Active |
| US8699166B2 | Magnetic head drive device with micro-actuators of end arms rotating in a direction opposite micro-actuators of intermediate arms | Physics | 1 | Active |
| US8009390B2 | Head gimbal assembly with recessed portion and manufacturing method thereof | Physics | 0 | Active |
| US8514523B2 | Flexible-printed-circuit voice-coil assembly configured for integration in a voice-coil motor | Electricity | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.